Modes of Occurrence of Rare-Earth Elements (La, Ce, Sm, Eu, Tb, Yb, Lu) in Coals of Northern Asia (Review)

Арбузов, Сергей Иванович; Finkelman, Robert B.; Ilenok, S.S.; Maslov, S. G.; Mezhibor, Antonina; Блохин, М. Г.

doi:10.3103/s0361521919010026

Cited by 14 publications

(2 citation statements)

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“…Coal mined from the Azeiskoe deposit is well described in the literature. 6,25,34 Besides the high concentration of REE, the coal is characterized by high content of humic acids (77 AE 3%), which bind about 38% REE. Mechanochemical activation increased the extraction yield of humic acids to 82.9 AE 0.1%, 80 AE 1%, and 83 AE 3% in the cases when it was performed in the presence of sodium percarbonate, sodium chloride, and monosodium phosphate, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…1,2 Until recently, ores were considered to be the main source of REEs; however, at present, coals (including brown coal) are regarded as a promising source of REEs. [2][3][4][5][6] Brown coal is viewed as a fuel characterized by low degree of coalication (metamorphism). It is rich in organic matter, including humic acids (HAs), which are involved in the accumulation of REEs.…”

Section: Introductionmentioning

confidence: 99%

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Concentrating rare earth elements in brown coal humic acids by mechanochemical treatment

et al. 2021

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Concentrating rare earth elements in brown coal humic acids by mechanochemical treatment

et al. 2021

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Clean coal geology in China: Research advance and its future

Wang

Tang

Wang

et al. 2020

Int J Coal Sci Technol

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In China, the connection between coal utilization and environmental pollution has been increasingly evident due to the rapid growth in energy consumption. Clean coal technology (CCT) is one of the effective methods to address coal-associated pollution. However, CCT needs the practical and theoretical support of clean coal geology (CCG). In this paper, a new definition of CCG is proposed, based on the definitions of coal, coal geology, and CCT, combined with the development of national CCG. CCG is the discipline comprehensively researching the genesis, nature, distribution, cleaning potential, clean utilization and environmental effects of resources (coal, coal bed methane, and other coal-associated resources) that can be cleaned by CCT. The research content of CCG is discussed from different aspects, such as cleaning potential evaluation, geological guarantee for coal mining, ash yields and sulfur contents, trace elements, pollution caused by coal, and mine reclamation. The progress of CCG in China is also briefly divided into four stages and delineated. Finally, scientific problems in CCG are summarized and an outlook for CCG is given.

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Tungsten (W) geochemistry in north Asian coals (Siberia, Russian far east and Kazakhstan)

Arbuzov,

Chekryzhov,

Vyalov

et al. 2024

International Journal of Coal Geology

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Modes of Occurrence of Rare-Earth Elements (La, Ce, Sm, Eu, Tb, Yb, Lu) in Coals of Northern Asia (Review)

Cited by 14 publications

References 42 publications

Concentrating rare earth elements in brown coal humic acids by mechanochemical treatment

Concentrating rare earth elements in brown coal humic acids by mechanochemical treatment

Clean coal geology in China: Research advance and its future

Tungsten (W) geochemistry in north Asian coals (Siberia, Russian far east and Kazakhstan)

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